Answer:
Step-by-step explanation:
C= d*pi
49 x 2 = 98
98 x 3.14= 307.72
Since 308 is the closest to 307.72 it's the most accurate answer.
Answer:

Step-by-step explanation:
Let's use a start by using common denominators.
and 
Now, replace the original equation with the common denominators. 
Solve! 
Answer:
The yellow polygon is the scaled version of the red one (scaled by 3×), so the variable w = 9
Answer:
A
Step-by-step explanation:

Horizontal asymptote: y = 0
Exponential growth.